<?php
/**
 * Created by PhpStorm.
 * User: zhangrongxiang
 * Date: 2018/3/8
 * Time: 下午9:27
 */

$text    = "The quick brown fox jumped over the lazy dog.";
$newtext = wordwrap( $text, 20, "\n" );
//The quick brown fox
//jumped over the lazy
//dog.
echo $newtext . PHP_EOL;

$text    = "A very long woooooooooooord.";
$newtext = wordwrap( $text, 8, "\n", false );
//A very
//long
//woooooooooooord.
echo $newtext . PHP_EOL;
$newtext = wordwrap( $text, 8, "\n", true );
//A very
//long
//wooooooo
//ooooord.
echo $newtext . PHP_EOL;

$str = "hello world hello php";
//hello-world-hello-php
echo wordwrap( $str, 5, "-", false ) . PHP_EOL;
//hello world hello php
echo wordwrap( $str ) . PHP_EOL;
//hello
//world
//hello
//php
echo wordwrap( $str, 3 ) . PHP_EOL;